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Finding the Fourth Proportional to 18,908.08, 28,359.96 and 5,058.16

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Solution

The fourth proportional to 18,908.08, 28,359.96 and 5,058.16 is: 7,586.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.08 : 28,359.96 = 5,058.16 : x
  2. Step 2: Convert to fraction form
    18,908.08/28,359.96 = 5,058.16/x
  3. Step 3: Cross multiply
    18,908.08x = 28,359.96 × 5,058.16
  4. Step 4: Simplify right side
    18,908.08x = 143,449,215.27
  5. Step 5: Solve for x
    x = 143,449,215.27/18,908.08
  6. Step 6: Final answer
    x = 7,586.66

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.